package com.hdc.sell.controller;

import com.hdc.sell.enums.ResultEnum;
import com.hdc.sell.exception.SellException;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.error.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.net.URLEncoder;

/**
 * @author 郭丽然
 * @program: sell
 * @date 2020/6/3 17:03
 * 功能：
 */
@Controller
@RequestMapping("/wechat")
@Slf4j
public class WechatController {

    @Autowired
    private WxMpService wxMpService;

    @GetMapping("/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl) {
        //1. 配置
        //2. 调用方法
        String url ="http://guo2020.natapp1.cc/sell/wechat/userInfo";
        String redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url,
                WxConsts.OAuth2Scope.SNSAPI_BASE, URLEncoder.encode(returnUrl));
        return "redirect:" + redirectUrl;
    }

    @GetMapping("/userInfo")
    public String userInfo(@RequestParam("code") String code,
                           @RequestParam("state") String returnUrl) {
        //1根据code获取openid
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken;
        try {
            wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        } catch (WxErrorException e) {
            log.error("[微信网页授权]{}",e);
            throw new SellException(ResultEnum.WX_MP_ERROR.getCode(),
                    e.getError().getErrorMsgEn());
        }
        String openid= wxMpOAuth2AccessToken.getOpenId();
        //2重定向到state所表示url，并且携带请求参数openid
        return "redirect:"+returnUrl+"?openid="+openid;

    }
}
